Jack.



LE ROY WILLOUR. JACK.

APPLIOATION nun 1mm 25, 1910.

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Patented Apr. 18, 1911.

LE ROY WILLO'UR. JACK.

APPLICATION FILED JUNB'BE, 1910 990,089. Patented Apr. 18, 1911.

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UNITED STATES PATENT. OFFICE.

LE ROY WILLOUR, OF ASHLAND, OHIO, ASSIGNOR TO THE ASHLAND MANUFACTURINGCOMPANY, OF .ASHLAND, OHIO, A CORPORATION OF OHIO.

JACK.

Specification of Letters Patent.

Patented Apr. 18, 1911.

Application filed June 25, 1910. Serial No. 568,899.

To all whom it may concern:

Be it known that I, Ln ItoY WILLOUR, a citizen of the United States,residing at Ashland, in the county of Ashland and State of Ohio, haveinvented certain new and useful Improvements in Jacks, of which thefollowing is a specification.

My invention relates to jacks, and particularly to a jack which may beeasily and quickly operated, and to be used in connection withautomobiles or the like.

The object of this invention is to provide a lifting jack formed of fewand simple parts, and which may be therefore manufactured very cheaply.

In the accompanying drawings, forming a part of this specification, andin which like numerals are employed to designate like parts throughoutthe same, Figure 1 is a side view of the jack, Fig. 2 is a detailsectional view taken on the line 2-2 of Fig. 1, Fig. 3 is a perspectiveView of the adjusting handle of the jack, the same being removed, Fig. 4is a central vertical sectional view taken through the jack, and atright angles to Fig. 1, Fig. 5 is an enlarged fragmentary elevation ofthe actuating lever or handle, and Fig. 6 is a side view of the disk,constituting a. portion of the jack.

In the drawings, wherein is illustrated a preferred embodiment of myinvention, the numeral 1 designates a vertically disposed standardforming the body support of the jack. This standard is provided at itslower end with a base 2, which is further connected with standard 1 bymeans of triangular sections of material 3. The standard 1 is providedwith a main axial opening 4 extending therethrough, to receive alongitudinally movable rack-bar 5, as shown. The standard 1 maypreferably have its walls provided with longitudinally disposed slots 6to lessen the weight of the jack. The rack-bar 5 is provided upon itsupper end with a head 7, as shown, and upon one side thereof with teeth8. As clearly illustrated in Fig. 4:, the teeth 8 are disposed tooperate within an auxiliary longitudinal opening 9 formed through thestandard 1, and which leads into the axial opening 1. The standard 1 isprovided upon its side wall 10 and near its upper end, with an opening11, which has communication with the opening 9, as shown.

The wall 10 of the standard 1, has a cylindrical stud-shaft 12 formedthereon, as

shown. This stud-shaft has an enlarged base 13, which forms with thestud-shaft proper, a shoulder 14. A disk 15 is rotatably mounted uponthe stud-shaft 12 in engagement with the base 13, as shown. The disk 15is provided upon its inner side with an involutc thread 16. Thestud-shaft 12 is disposed at an obtuse angle to the standard 1 withrelation to the lower end of said standard, whereby the disk 15 isdisposed to operate within the opening 11. The involute thread 16engages the teeth 8 of the rack-bar, as clearly shown in Fig. 1. Thedisk 15 is provided upon its outer side, with an annular flange 17 whichis adjacent the periphery of said disk, and this annular flange isprovided upon its inner surface with teeth 18, as shown. The disk 15 isfurther provided with a hub portion 19, cast integral with the disk anddisposed upon the stud-shaft 12. The hub portion 19 has its outer endreduced and formed square in cross section, as shown at 20. An adjustinglover or handle 21 is provided, to the inner end of which is connected asquare skeleton portion 22, adapted to fit snugly upon the reduced end20 of the hub portion 19. The handle 21 is retained upon the reduced end20, by a washer 23, as shown in Fig. 2. The stud-shaft 12 has its outerend provided with an axially extending screw threaded opening 24, toreceive a screw 25, the head of which engages said washer and holds thesame in place.

An actuating handle or lever 26 is provided, upon the inner end of whichis formed a head 27 having an elongated opening 28 formed therethrough,as shown. The opening 28 is of suflicient transverse diameter to looselyreceive the hub portion 19, and said opening is suiliciently elongatedto permit of a longitudinal movement of the head 27 with relation to thehub portion 19. The head 27 surrounds the hub 19 and is disposed withinthe annular flange 17, and the handle 26 is off-set as shown at 30 toclear said annular flange. The head 27 is provided adjacent itsconnection with halidle 26, with a lug or tooth 31. The lug 31 engagesthe teeth 18 to effect proper rotation of the disk 15. The head 27 isdisposed between the disk 15 and the skeleton portion 22, whereby saidhead is prevented from lateral displacement. From the above descriptionit is obvious that the actuating handle 26 is prevented from unduelateral movements, while the same is permitted to be movedlongitudinally, to eifect the engagement or disengagement of the lug 31with the teeth 18. r

In the use of my jack, the actuating handle 26 is first movedlongitudinally to disengage the lug 31 and the teeth 18. The ad-.justing lever or handle 21 is then rotated counter-clockwise to quicklyraise the rackbar so that the head 7 may engage the load to be moved.The actuating handle or lever 26 is moved upwardly and thenlongitudinally toward the operator, to cause the lug 31 to be disposedbet-ween certain of the teeth 18. The actuating handle 26 is thenoscillated downwardly to rotate disk 15. After the handle 26 has beenmoved to its lowermost position, the same is moved longitudinally awayfrom the operator, whereby the lug S1 is disengaged from the teeth 18and the handle 26 permitted to be oscillated upwardly without causingthe rotation of the disk 15. The lug 31 is then urged into engagementwith the teeth 18 and the operation is repeated, as above described. Itis obvious that the actuating handle 26 may be employed to lower therack-bar 5, as well as to elevate the same. After the load has beenremoved from the head 7, the rack-bar 5 may be quickly returned to itslowermost position by proper rotation of the handle 21.

I wish it understood that the form of my invention herewith shown anddescribed, is to be taken as a preferred example of the same, and thatcertain changes in the shape, size and arrangement of parts may beresorted to, without departing from the spirit of my invention or thescope of the subjoined claims.

Having thus fully described my invention What I claim as new and desireto secure by Letters Patent, is

1. In a lifting jack, a standard, a rackbar having slidable engagementtherewith, a stud-shaft rigidly mounted upon said standard, a diskrotatably mounted upon said stud-shaft, having one side thereof providedwith an involute thread and its opposite side provided with an annularflange carrying teeth upon its inner side, said disk being furtherprovided upon its outer side with a hub-portion cast integral therewithand rotatably mounted upon said stud-shaft, a relatively small rotaryadjusting lever rigidly connected with said hub-portion, an operatinglever having a head provided with an elongated slot to receive saidhub-portion, whereby said head is disposed between said disk andadjusting lever, and said operating lever carrying a tooth to engagesaid teeth upon said disk.

2. In a lifting jack, a standard, a rackbar to cooperate therewith, adisk to move said rack-bar, a rotary adjusting lever to move saidrack-bar into engagement with its load, and an oscillatory operatinglever having its head disposed between said disk and adjusting lever,said oscillatory lever carrying means to rotate said disk.

8. In a lifting jack, a standard, a rackbar having slidable engagementtherewith, a disk rotatably mounted upon said standard and having a hubportion, said disk being provided upon one side thereof with an involutethread and upon its opposite side with teeth surrounding said hubportion, an adjusting lever connected with said hub portion, and anoperating lever comprising a handle and an off-set head portion, saidhead portion having an opening formed therethrough to receive said hubportion, said head portion being disposed for operation between therotatable disk and adjusting lever, whereby said head portion isprevented from lateral displacement.

4. In a lifting jack, a standard, a rackbar having slidable engagementtherewith, a disk rotatably mounted upon said standard and having a hubportion, said-disk being provided upon one side with an involute threadand upon the opposite side with teeth surrounding said hub portion, anoperating lever comprising a handle provided with an off-set head havingan opening formed therethrough for receiving said hub portion, wherebysaid head may be disposed within the space surrounded by the teeth andthe handle portion disposed outwardly of said space to clear said teeth,means carried by said operating lever to engage said teeth, and anadjusting lever rigidly connected with the free end of said hub portionto quickly rotate said disk and to prevent the lateral displacement ofsaid off-set head.

5. In a lifting ack, a standard, a rack-bar having slidable engagementtherewith, a stud-shaft connected with said standard, a disk rotatablymounted upon said studshaft for raising and lowering said rack-bar, saiddisk being provided with a hub having its free ends formed approximatelysquare in cross-section, an oscillatory lever loosely mounted upon saidhub, an adjusting lever mounted upon said free end of the hub, and meansto removably hold said adjusting lever upon said free end.

In testimony whereof I aiiix my signature in presence of two witnesses.

LE ROY WVILLOUR. Witnesses J. F. WELTY, J. A. SI-IEARER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

